What happens to antibiotics after the expiration date?

Can you still take them? Do they get stronger? Weaker? Can they make you sick?
Answers:    the expiration date doesn't really indicate a point at which the medication is no longer effective or has become unsafe to use. Medical authorities state expired drugs are safe to take, even those that expired years ago. A rare exception to this may be tetracycline, but the report on this is controversial among researchers. It's true the effectiveness of a drug may decrease over time, but much of the original potency still remains even a decade after the expiration date. Excluding nitroglycerin, insulin, and liquid antibiotics, most medications are as long-lasting as the ones tested by the military. Placing a medication in a cool place, such as a refrigerator, will help a drug remain potent for many years.
If we are talking about a liquid suspension then I wouldn't suggest keeping them beyond the expiration date...

But in the case of a solid antibiotic...the expiration date is a date that allows you to BE SURE of their effectiveness.
If we are talking about a few weeks there shouldn't be a problem...Most of the common "cillins",Penicillin,Amoxicill... etc..can be stored in solid form for a year without damage.
You can use them for about up to 6 months after expiration,,,they make be weaker, but won't make him sick.

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